23229290 has 32 divisors (see below), whose sum is σ = 49438080. Its totient is φ = 7689024.

The previous prime is 23229277. The next prime is 23229299. The reversal of 23229290 is 9292232.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (23229299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3692 + ... + 7751.

It is an arithmetic number, because the mean of its divisors is an integer number (1544940).

Almost surely, 2^23229290 is an apocalyptic number.

23229290 is an abundant number, since it is smaller than the sum of its proper divisors (26208790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23229290 is a wasteful number, since it uses less digits than its factorization.

23229290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11486.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 23229290 is about 4819.6773750947. The cubic root of 23229290 is about 285.3286042515.

The spelling of 23229290 in words is "twenty-three million, two hundred twenty-nine thousand, two hundred ninety".